wiki.techinc.nl/languages/classes/LanguageLt.php

<?php

/** Lithuanian (Lietuvių)
 *
 * @ingroup Language
 */
class LanguageLt extends Language {
	/* Word forms (with examples):
		1 - vienas (1) lapas, dvidešimt vienas (21) lapas
		2 - trys (3) lapai
		3 - penkiolika (15) lapų
	*/
	function convertPlural( $count, $forms ) {
		if ( !count($forms) ) { return ''; }

		//if no number with word, then use $form[0] for singular and $form[1] for plural or zero
		if( count($forms) === 2 ) return $count == 1 ? $forms[0] : $forms[1];

		$forms = $this->preConvertPlural( $forms, 3 );

		if ($count%10==1 && $count%100!=11) return $forms[0];
		if ($count%10>=2 && ($count%100<10 || $count%100>=20)) return $forms[1];
		return $forms[2];
	}
}